Compare preprocessing for pixel clustering - all samples, Gaussian blur using sigma=4

ln transformation, 99.9% normalization

Log2 transformation, 99.9% normalization

Log10 transformation, 99.9% normalization

Arcsinh transformation, 99.9% normalization

Binarize, cut-off = 50th percentile of all non-zero pixels for each marker

Binarize, cut-off = 80th percentile of all non-zero pixels for each marker